:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --accent: #2563eb;
  --border: #e5e7eb;
  
  /* Constantes calendrier */
  --hour-start: 8;
  --hour-end: 18;
  --hours-total: 10;
  --px-per-hour: 60px;
  --schedule-height: 600px;
  
  /* Couleurs des types de cours (mode clair) */
  --color-IN: #F0E8F8; --border-IN: #7C3AED;
  --color-SN: #E8F4F8; --border-SN: #0891B2;
  --color-PR: #F8E8E8; --border-PR: #EF4444;
  --color-LV: #E8F8E8; --border-LV: #10B981;
  --color-XP: #F8F8E8; --border-XP: #EAB308;
  --color-AU: #F8F0E8; --border-AU: #F59E0B;
  --color-EP: #E8F0F8; --border-EP: #3B82F6;
  --color-MAC: #F0F8E8; --border-MAC: #22C55E;
  --color-SP: #F8E8F0; --border-SP: #EC4899;
  --color-PT: #E8F8F6; --border-PT: #14B8A6;
}

html.dark-mode {
  color-scheme: dark;
  --bg: #0f172a;
  --card: #1e293b;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #3b82f6;
  --border: #334155;
  
  /* Couleurs des types de cours (mode sombre) */
  --color-IN: #4C1D97; --border-IN: #A78BFA;
  --color-SN: #0C4A6E; --border-SN: #06B6D4;
  --color-PR: #7F1D1D; --border-PR: #FCA5A5;
  --color-LV: #14532D; --border-LV: #86EFAC;
  --color-XP: #713F12; --border-XP: #FBBF24;
  --color-AU: #7C2D12; --border-AU: #FDBA74;
  --color-EP: #1E3A8A; --border-EP: #60A5FA;
  --color-MAC: #15803D; --border-MAC: #4ADE80;
  --color-SP: #831843; --border-SP: #F472B6;
  --color-PT: #134E4A; --border-PT: #5EEAD4;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}

.header {
  background: linear-gradient(120deg, #1d4ed8, #3b82f6);
  color: #fff;
  padding: 2.5rem 0 2rem;
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.theme-toggle {
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #fff;
  padding: 0.5rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1.2rem;
  transition: background 0.2s ease;
}

.theme-toggle:hover {
  background: rgba(255, 255, 255, 0.3);
}

.header h1 {
  margin: 0 0 0.5rem;
  font-size: 2rem;
}

.header p {
  margin: 0;
  opacity: 0.9;
}

main {
  padding: 2rem 0 3rem;
  display: grid;
  gap: 1.5rem;
}

.card {
  background: var(--card);
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

.controls {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: 1fr;
}

.controls-group {
  display: grid;
  gap: 0.75rem;
}

#roomControls {
  gap: 0;
}

#teacherControls select {
  max-width: 100%;
  word-break: break-word;
}

#roomModeStatus {
  min-height: 0;
  margin: 0;
  font-size: 0.9rem;
}

.is-hidden {
  display: none;
}

.controls label {
  font-weight: 600;
}

.controls select,
.controls button {
  padding: 0.65rem 0.85rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  font-size: 1rem;
}

.controls button {
  background: var(--accent);
  color: #fff;
  border: none;
  cursor: pointer;
  transition: transform 0.1s ease-in-out, box-shadow 0.1s ease-in-out;
}

.controls button:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.25);
}

.download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 0.85rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.room-search {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: center;
}

.room-search input {
  flex: 1;
  min-width: 200px;
  padding: 0.65rem 0.85rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  font-size: 1rem;
  background: var(--card);
  color: var(--text);
}

.room-search button {
  padding: 0.65rem 0.85rem;
  border-radius: 8px;
  border: none;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  transition: transform 0.1s ease-in-out, box-shadow 0.1s ease-in-out;
}

.room-search button:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.25);
}

.room-search-section {
  /* Positionné après le planning uniquement sur mobile */
}

#emptyRoomsBtn {
  padding: 0.65rem 0.85rem;
  border-radius: 8px;
  border: none;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  transition: transform 0.1s ease-in-out, box-shadow 0.1s ease-in-out;
}

#emptyRoomsBtn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.25);
}

@media (max-width: 480px) {
  .room-search-section {
    order: 10;
  }
}

.room-schedule-container {
  margin-top: 1rem;
}

.room-schedule-container h3 {
  margin-bottom: 1rem;
  color: var(--accent);
}

.status {
  margin-top: 1rem;
  color: var(--muted);
}

.schedule {
  display: grid;
  grid-template-columns: repeat(5, minmax(130px, 1fr));
  gap: 0.75rem;
}

.schedule-header {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.planning-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.planning-header h2 {
  margin: 0;
}

.week-nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.week-nav button {
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  padding: 0.4rem 0.7rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
}

.week-nav button:first-child {
  order: -1;
}

.week-nav button:last-child {
  order: 1;
  margin-left: auto;
}

.week-label {
  order: 0;
  flex: 1;
  text-align: center;
}

.week-nav button:hover {
  background: var(--bg);
}

.today-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 0.65rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.1s ease-in-out, box-shadow 0.1s ease-in-out;
}

.today-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.25);
}

.week-label {
  font-weight: 600;
  color: var(--text);
  background: var(--card);
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.day-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

@media (max-width: 480px) {
  .day-group.today {
    order: -1;
  }
}

.day-title {
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
  position: sticky;
  top: 0;
  background: var(--card);
  z-index: 5;
  padding: 0.4rem;
  margin-left: -0.4rem;
  margin-right: -0.4rem;
  border-radius: 6px;
}

.day-group.today .day-title {
  background: var(--accent);
  color: #fff;
}

.day-schedule {
  position: relative;
  min-height: var(--schedule-height);
  flex: 1;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  font-size: 0.85rem;
  background-image: repeating-linear-gradient(
    0deg,
    var(--border) 0px,
    var(--border) 1px,
    transparent 1px,
    transparent var(--px-per-hour)
  );
}

.hour-grid {
  display: none;
}

.event {
  position: absolute;
  left: 2px;
  right: 2px;
  border: 1px solid var(--accent);
  border-left: 4px solid var(--accent);
  border-radius: 6px;
  padding: 0.4rem;
  background: var(--event-bg, #f0f4ff);
  border-color: var(--event-border, var(--accent));
  border-left-color: var(--event-border, var(--accent));
  overflow: hidden;
  
  /* Positionnement via CSS variables depuis script.js */
  top: var(--event-top, 0);
  height: var(--event-height, 50px);
}

/* Couleurs par type de cours gérées par variables CSS */

.event h3 {
  margin: 0;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--event-text, var(--accent));
}

.event p {
  margin: 0.2rem 0 0;
  font-size: 0.75rem;
  color: var(--event-subtext, var(--muted));
}

.current-time-line {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: #ef4444;
  border-top: 1px solid #dc2626;
  z-index: 10;
  top: var(--indicator-top, 0);
}

.footer {
  padding: 1.5rem 0 2.5rem;
  color: var(--muted);
  text-align: center;
}

/* Modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.modal-content {
  background: var(--card);
  border-radius: 12px;
  padding: 2rem;
  max-width: 500px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  position: relative;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.close-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--muted);
  transition: color 0.2s;
}

.close-btn:hover {
  color: var(--text);
}

.modal-content h2 {
  margin-top: 0;
  color: var(--accent);
}

.event-details {
  margin: 1.5rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.event-detail-row {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 1rem;
}

.event-detail-label {
  font-weight: 600;
  color: var(--muted);
  font-size: 0.9rem;
}

.event-detail-value {
  color: var(--text);
  word-break: break-word;
}

.modal-btn {
  width: 100%;
  padding: 0.75rem;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.1s ease-in-out, box-shadow 0.1s ease-in-out;
}

.modal-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.25);
}

.next-course-mobile {
  display: none;
}

.next-course-content {
  display: grid;
  gap: 0.75rem;
}

.next-course-event {
  padding: 1rem;
  border-radius: 8px;
  border-left: 4px solid var(--accent);
  background: var(--event-bg, var(--color-IN, var(--bg)));
  border-left-color: var(--event-border, var(--border-IN, var(--accent)));
  color: var(--event-text, var(--text));
}

.next-course-event p {
  color: var(--event-subtext, var(--muted));
}

/* Couleurs du prochain cours gérées par variables CSS */

@media (min-width: 720px) {
  .controls {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    align-items: end;
  }

  #teacherControls {
    grid-column: span 3;
  }

  #refreshBtn {
    grid-column: span 2;
    justify-self: end;
  }

  #roomControls {
    grid-column: span 3;
  }

  .controls label {
    grid-column: span 6;
  }

  .schedule-header {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

@media (max-width: 1024px) {
  .schedule {
    grid-template-columns: repeat(4, minmax(110px, 1fr));
  }

  .day-schedule {
    min-height: 500px;
  }
}

@media (max-width: 768px) {
  main {
    padding: 1rem 0 2rem;
  }

  .card {
    padding: 1rem;
  }

  .room-search {
    flex-direction: column;
  }

  .room-search input {
    min-width: 100%;
  }

  .schedule {
    grid-template-columns: repeat(2, minmax(100px, 1fr));
    gap: 0.5rem;
  }

  .day-schedule {
    min-height: 400px;
  }

  .day-title {
    font-size: 0.85rem;
    padding: 0.3rem;
    margin-left: -0.3rem;
    margin-right: -0.3rem;
    margin-bottom: 0.3rem;
  }

  .event {
    padding: 0.3rem;
    left: 1px;
    right: 1px;
  }

  .event h3 {
    font-size: 0.7rem;
  }

  .event p {
    font-size: 0.65rem;
    margin-top: 0.1rem;
  }

  .week-nav {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .week-nav button {
    padding: 0.3rem 0.6rem;
    font-size: 0.9rem;
  }

  .week-label {
    width: 100%;
    text-align: center;
    font-size: 0.9rem;
  }

  .controls {
    gap: 0.5rem;
  }

  .controls select,
  .controls button {
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .header {
    padding: 1.5rem 0 1rem;
  }

  .header h1 {
    font-size: 1.5rem;
    margin-bottom: 0.3rem;
  }

  .header p {
    font-size: 0.9rem;
  }

  main {
    padding: 0.75rem 0 3rem;
    gap: 1rem;
  }

  .next-course-mobile {
    display: block;
    order: -1;
  }

  .card {
    padding: 0.75rem;
  }

  .schedule {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .day-schedule {
    min-height: 500px;
  }

  .day-title {
    font-size: 1rem;
    padding: 0.5rem;
    margin-left: -0.5rem;
    margin-right: -0.5rem;
    margin-bottom: 0.5rem;
  }

  .event {
    padding: 0.4rem;
    left: 1px;
    right: 1px;
  }

  .event h3 {
    font-size: 1.1rem;
  }

  .event p {
    font-size: 0.95rem;
    margin-top: 0.05rem;
  }

  .controls {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }

  .controls label {
    grid-column: auto;
    font-size: 0.9rem;
  }

  .controls select,
  .controls button {
    padding: 0.45rem 0.65rem;
    font-size: 0.85rem;
    border-radius: 6px;
  }

  .week-nav {
    width: 100%;
    gap: 0.4rem;
  }

  .week-nav button {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
  }

  .week-label {
    font-size: 0.8rem;
    text-align: center;
    width: 100%;
  }

  .status {
    margin-top: 0.75rem;
    font-size: 0.85rem;
  }

  .footer {
    padding: 1rem 0 1.5rem;
    font-size: 0.85rem;
  }

  .modal-content {
    width: 95%;
    padding: 1.5rem;
  }

  .event-detail-row {
    grid-template-columns: 100px 1fr;
    gap: 0.5rem;
  }
}